DLRO10HD and DLRO10HDX
8
Overview
Test Mode Rotary Switch
Test modes and instrument Off are selected with the Test Mode rotary switch.
AUTO
3s
2
5
1 6
3 4
Available test modes are:
Item Mode Description
1 Off Instrument is Off. Rotate the switch to any mode to start the instrument
2 Manual Bi-directional Test current applied in both directions current flow. Continuity of all four
connections is checked. Current is applied in both forward and reverse
direction.
See Manual Bi-directional Test (page 14)
3 Automatic
Bi-directional
Test current applied in both directions current flow
See Automatic Bi-directional Test (page 15)
See Automatic Bi-directional Test (page 18): Automatic save (DLRO10HDX)
4 Automatic
Uni-directional
Current is applied in one direction only, to speed up the measurement process.
Standing EMF’s setup during the test are ignored so lower accuracy can result
See Automatic Uni-directional Test (page 16)
See Automatic Uni-directional Test (page 19): Automatic save (DLRO10HDX)
5 Continuous Test current is applied in both directions. The test repeats at three seconds
intervals
See Continuous Test (page 17)
See Continuous Test (page 20): Automatic save (DLRO10HDX)
6 Inductive Test current applied in only one direction.
See Inductive Test (page 13)
Warning: When inductive loads are measured the current carrying leads must be securely clamped to
the item being tested.
Warning: Do not remove the current carrying leads before any stored charge has been discharged at
the end of the test.
Warning: Failure to comply with these instructions might result in an arc being produced, which might
be dangerous for the instrument and the operator.
Note: When inductive loads are measured it is necessary to wait for the voltage to stabilise, so the measurement
process can take a few seconds or several minutes.